From mboxrd@z Thu Jan  1 00:00:00 1970
From: Daniel Drake <dsd@gentoo.org>
Date: Mon, 15 Oct 2007 13:07:04 +0000
Subject: Re: usb_id segfaulting on 2.6.23
Message-Id: <471365F8.4010002@gentoo.org>
List-Id: <linux-hotplug.vger.kernel.org>
References: <47135D33.7080805@gentoo.org>
In-Reply-To: <47135D33.7080805@gentoo.org>
MIME-Version: 1.0
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To: linux-hotplug@vger.kernel.org

Kay Sievers wrote:
> Hmm, works fine here with my USB keyboard. Can you provide the output of:
>   udevinfo -a -p <devpath>
> for the failing setup?


# udevinfo -a -p 
/devices/pci0000:00/0000:00:02.0/usb2/2-2/2-2:1.0/input/input2/event2

Udevinfo starts with the device specified by the devpath and then
walks up the chain of parent devices. It prints for every device
found, all possible attributes in the udev rules key format.
A rule to match, can be composed by the attributes of the device
and the attributes from one single parent device.

   looking at device 
'/devices/pci0000:00/0000:00:02.0/usb2/2-2/2-2:1.0/input/input2/event2':
     KERNEL="event2"
     SUBSYSTEM="input"
     DRIVER=""
     ATTR{dev}="13:66"

   looking at parent device 
'/devices/pci0000:00/0000:00:02.0/usb2/2-2/2-2:1.0/input/input2':
     KERNELS="input2"
     SUBSYSTEMS="input"
     DRIVERS=""
 
ATTRS{modalias}="input:b0003v045Ep00BBe0111-e0,1,11,14,k71,72,73,74,75,77,79,7A,7B,7C,7D,7E,7F,80,81,82,83,84,85,86,87,88,89,8A,B7,B8,B9,BA,BB,BC,BD,BE,BF,C0,C1,C2,F0,raml0,1,2,8,sfw"
     ATTRS{uniq}="_3A1B506A-BB77-444C-851B-C424997B2763_"
     ATTRS{phys}="usb-0000:00:02.0-2/input0"

   looking at parent device 
'/devices/pci0000:00/0000:00:02.0/usb2/2-2/2-2:1.0/input':
     KERNELS="input"
     SUBSYSTEMS=""
     DRIVERS=""

   looking at parent device 
'/devices/pci0000:00/0000:00:02.0/usb2/2-2/2-2:1.0':
     KERNELS="2-2:1.0"
     SUBSYSTEMS="usb"
     DRIVERS="usbhid"
     ATTRS{modalias}="usb:v045Ep00BBd0100dc00dsc00dp00ic03isc01ip01"
     ATTRS{bInterfaceProtocol}="01"
     ATTRS{bInterfaceSubClass}="01"
     ATTRS{bInterfaceClass}="03"
     ATTRS{bNumEndpoints}="01"
     ATTRS{bAlternateSetting}=" 0"
     ATTRS{bInterfaceNumber}="00"

   looking at parent device '/devices/pci0000:00/0000:00:02.0/usb2/2-2':
     KERNELS="2-2"
     SUBSYSTEMS="usb"
     DRIVERS="usb"
     ATTRS{dev}="189:129"

   looking at parent device '/devices/pci0000:00/0000:00:02.0/usb2':
     KERNELS="usb2"
     SUBSYSTEMS="usb"
     DRIVERS="usb"
     ATTRS{dev}="189:128"

   looking at parent device '/devices/pci0000:00/0000:00:02.0':
     KERNELS="0000:00:02.0"
     SUBSYSTEMS="pci"
     DRIVERS="ohci_hcd"
     ATTRS{msi_bus}=""
     ATTRS{broken_parity_status}="0"
     ATTRS{enable}="1"
 
ATTRS{modalias}="pci:v000010DEd0000036Csv0000147Bsd00001C25bc0Csc03i10"
     ATTRS{local_cpus}="ffffffff"
     ATTRS{irq}="23"
     ATTRS{class}="0x0c0310"
     ATTRS{subsystem_device}="0x1c25"
     ATTRS{subsystem_vendor}="0x147b"
     ATTRS{device}="0x036c"
     ATTRS{vendor}="0x10de"

   looking at parent device '/devices/pci0000:00':
     KERNELS="pci0000:00"
     SUBSYSTEMS=""
     DRIVERS=""
     ATTRS{uevent}=""


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